Beta和Y型分子筛催化四氢萘裂化规律的对比

Acta Petrolei Sinica (Petroleum Processing Section)(2015)

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Abstract
以四氢萘为探针分子,采用纯烃固定床微反装置,对比研究了Beta和Y型(以DASY(0.0)为例)2种分子筛催化芳香基环烷环烃类的裂化转化规律,采用PONA分析和GC-MS检测产物组成。结果表明,Beta分子筛对四氢萘裂化转化的催化活性低于 DASY (0.0),但 DASY (0.0)催化下四氢萘芳构化形成萘的选择性较高(可达到约45%),而Beta分子筛催化下四氢萘的开环裂化(ROP)选择性较高,芳构化生成萘的选择性仅为DASY (0.0)的1/3,且Beta分子筛催化下C3~C4低碳烃选择性及C3~C4低碳烃中的烯烃比例明显较高。
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Key words
Y zeolite,aromatic-naphthene,tetralin,catalytic cracking,Beta zeolite
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